Most King County offices will be closed on Monday, May 28, for Memorial Day.  
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We are committed to monitoring the water quality of the County's lakes to ensure their continued health, as well as the health of the public who utilize the lake's many resources. We invite you to learn more about our program by looking through the pages listed on the left. This site contains detailed graphs of water quality data, photographs of water sampling, and general information about the water quality of King County's lakes

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If you have question on this site, please contact Debra Bouchard (206) 477-4650 or Curtis DeGasperi (206) 477-4677

Lake News

Catching and eating fresh fish

Some fish are safer to eat than others. Check out the Public Health Insider blog post to learn where to fish, and what to fish for, throughout King County.

Toxic Algae Blooms

Toxic algal blooms typically peak in the late summer and early fall. Check out the to learn where toxic algae blooms have been reported throughout the state.